The State of New York sent over 413,000 men to the Union Army during the Civil War, the largest number from any state. Over 23,000 men from New York were at the Battle of Gettysburg, thesecond largest contingent of any state north or south, making up one quarter of the Army of the Potomac. They were organized into 68 infantry regiments, one infantry battalion, four companies of sharpshooters, seven cavalry regiments, an independent cavalry company and 16 artillery batteries. Two of the Army of the Potomac’s corps commanders,Major General Daniel SicklesandMajor General Henry Slocum, were from New York.

New York lost almost 6,700 casualties in the Battle of Gettysburg, thelargest total of any statefrom either side.